Turret lathe



Oct. 4, 1927. 1,644,566

a. E. CUTTAT TURRET LATHE Filed Feb. 2'7, 1923 I s Sheets-Sheet 7 71,644,566 .6. E. cu'r-rA'r TURRET-LATHE Filed Feb. 27. 1923 5 Sheets-Sheet 3 Patented Get. 4, 1927;

enonens EMILE domain, or rams, nrtnnonnssrenon To THE socmfrr-nnnomnvm IDES ANGIENS ETABLISSEMEN'IS cU'rtrA'r & cm, on PARIS, FRANCE.

TURRET LATHE.

Application filed February 27; aea seml No. 621,608, a d in mm 5 3 9, 5

This invention'relates to -improvernentfs in automatic and semi-automatic lathes in which'the control of the tools by'means of a tilting device permits the simultaneous machining of'several bars without interruption.

In these lathes, each bar is operated upon by a setof tools moved according to the shape of the member to be obtained. As many sets of tools can be used as there are bars capable of being operated upon atth'e same time by the machine, I I

' In the type of lathe forming the subject: matter of the present invention, vthe various sets of tools adapted to operate on the different bars are mounted on a single toolcarrier movable about a fixed axis from which the various sets of tools are equidistant; the angular position of this tool-carrier is determined by a single adjusting member, such as a cam, which thus constantly adjusts, relatively to the'bars to be turned.

This type of lathe is moreover characterized by the fact/that this single tool carrier is moved axially along'the shaft on which it is mounted by a second adjusting member, such as a cam, for the purpose of imparting to the tools a longitudinal displacement on' the bars to be operated upon.

This system of tilting'and longitudinally movable tool-carrier can also be applied in the case of a tool-carrier having only one set of tools operating upon one bar only. I

A lathe constructed in accordance with the present invention possesses the following ad vantages:

1.Identical and simultaneous adjustment of all the sets of tools, these sets being mounted on one and the same member, thus minimizing also the difficulties of adjustment.

2.-Simplicity of construction, since the control of the various sets of tools is quite as simple as in the case of a machine operating upon one bar only at a time, resulting in the possibility of increasing the number of sets of tools to thus obtain a production in proportion to the number of sets of the machine without complicating the adjusting mechanism forthe'tools.

3..The longitudinal movement of the tilting device carrying the sets of tools being directly obtained by a single cam permits turning out work of greatrlength with pre cision. I

In accordance with this invention, the

' i1g.l4= is a section latter figure. v

u ret lathes ar and provided with a ver'y' ple (Il8VlCQ'h2lV1l1g a11 inclined surfa permitting the work to be tapered or other wise shaped. i i These improvementswill o be described,

helieafter, y way of example, with reference tak n on h ine li- -B of Fig. 1, looking'towaiyds the right of thi Fig. 5 is a detail of a part of the. lathe,

As, shown in the. drawing, this mafihine comprises a frame a supporting a central shaft 6 driven by a wheel 0 gearing with a worm d connected with a cone pulley a] 4 1.1.1 he upper part: of: e fr me a; v are rotatablv mounted. two hollow shafts, f

through which pass; the bars. toibe operated upon and held 1n the ordinary manner by clampmgmembers.

lowshafts f, a guide barfl connects the two upright ends of theframea a Onthis guide-bar It can sl d e .le: @Qt-jlfiagi forming the ournal offatilting device 7" which carries the two sets of tools k operating upon the two bars 9. Through -the medium of this tilting device and the opposed relation of the tools of each set, when the lower tool of the right-hand set operates, the upper tool of the left-ha also, and revers'ely.

The journal-carriage dis moved axiallv along the guide it by a roller Z engagedand actuated by the cam m secured on the drum n rlgldwith the central shaft 6. A bar 0 holds the carriage i for preventing its rotation about the guide-barb. The carriage z is provided with adepend mg yoke" member engaging a sleeve p on which is secured a cam g which imparts the Betweenthe central shaft-Z) hol I nd set operates tilting or oscillating movement to the tilting T1011 the gIiide-bar It can" be secured; various apparatuses 'a," for, drilling, threading or [otherwise treating the Work. V

Th r'awvrkrlamp ngvd vi es h hollow :shaftsfand theyfeed of the Work bars- 9 r b 116 operated uponfasivellfas the means for 'rotating.-the latter are provided .as usual Ieine automatic lathes. 7 i During'the time' the 0 by'l'power 'applied to the 'ulleys t, the tools 7 aarefedalong the guide-ibar' h bymeai s of the rollerjfl engaging the Cam 1; secured on "thef drum 'nr J i' i thexb'ar-o-f i's -SeCu'red an adjustable device w having an inclined or other "sur. 1;face" w' vhieh facts onthe ;tilting device 9' throughthe;niedium-of'the roller 7' and V permits the j turning, 1 1 of conical or other Shaped work; "This inclined plane ensures f'the rigorousoperation of th'e' lathe, as the former or *thefmember :acts without interfmediate ico'unte'rshafton the tilting device.

carrying the two sets of tools In case this device" is not usedythere is no action of cam onthe tilting device. V i The forms, details, accessories materials a and dimensions'ofthe above-devices may of u course'ibevariedwithout departing thereby r froxn theprinciple of the invention. I

(so q-ycla ims:

bars g are rotated 'lrlnj lait-he structureya support,a guide, "Ia t q'ol carrier movable about; said: guide,

a plurality of sets of'tools mounted on said 'carrietand arranged equidistant from said I guidefwhereby tofproduce identical cuts in V separate vpie'ces of: \vork during? movement fOf thB CBI-I'iB IY'-abOl1t S&ld axis, a shaft arrangedparallel to saidguide, said tool car- 'i ,rierincludingI an 'arm, a roller on said, arm,

;: M n ai adjustment of the carrier for moving the latter about said axis to effect similar, adjustment of the several sets of tools, said tool carrier being m ovable 1n the direction of sald guide and means ad -ust1ng.saidcarr er in the (lllBC tion of guide. d 2. A lathe structure as claimed in claim 1 characterized in that the carrier is substan-,

tially inverted U-shaped and is arranged beneath the sets of tools whereby to deflect materialrcut by the tools laterally from thelathe.

3, A lathe structure as claimed in claim'l characterized in that the-'means adjusting the cal'rier infltlie direction of the guide includes a cam carried by said shaft.

44A lathe structure, a support, .a fixed guide-arranged in said support, a member mountedfor 'sliding movement on said guide in th6 dlI CtlOl1; 0lE the axis of the latter,a 1

tool carrier mounted to turn about said v slidable member and movable with the latter inthe direction of the axis of the guide, Work gulding members carried by the slidable member arranged symmetrically with respectto the axis ofthe guide,fa. driving shat-t, acam operated by said driving shaft f and "coactiug with the: tool carrier to swing v the latter about the guide, a plurality of sets oftools on the tool carrieiy means for moving sa1d cam along the drivlng shaft in synchro'nism ivith'the movement "of the slid, 1 able memberralong the guide and means operated-by said guide'shaft for eflecting said guide 'l he foregoing specification' of my improvements in turret lathes, signed by me this8th day of February, 1923. shaft engaged by the'arm of GEORGES EMILE the slidable member along GUTTATf 

